The numerical control technology of machine of NILES common roll flute

Foreword the machine of roll flute of a few ZSTZ315/630 C3 that my company imports from Yuan Dongde, treatment precision is good, efficiency is tall. But because be the product that designs seventies, electric control uses relay logistic, not only volume is large, the structure is complex, maintenance is difficult, pass use of nearly 20 years especially, spare parts is extinct, relay contact damage is serious, fault rate is high in last few years. Because lubricate sufficient, the slideway of this machine tool, guide screw, filar mother, the worm wheel worm of slip and workbench wear away not quite, precision of machine tool machinery keeps better. We use system of NUM1040 numerical control and corresponding drive and bisect of servo electric machinery to spend workbench recently 1, X axis undertook numerical control is changed transform, all hanging was taken on machinery annulus, operate not only simple, still raised transmission precision. Electric control replaces original relay with PLC entirely logistic, simplified circuit structure. The gear that via detecting treatment gives accumulates an error to achieve 0.

0052mm, pitch deviation 0.

0038mm, 6 pitch are poor 0.

0046mm, diameter jumps 0.

009mm, consistency of treatment workpiece precision is good, transform gain complete success. 2.

Numerical control transforms the main parameter of machine of roll flute of plan ZSTZ315/630 C3 to be as follows: Workbench diameter: 315mm/630mm workbench bears the weight of: 200kg/400kgX axis journey: Horn of grinding of 360mm emery wheel: 14~26 spends length of slide carriage stroke: 20~225mm stroke frequency: The campaign of 75~315/Min primary machine tool is finished through of all kinds and mechanical drive, graduation workbench (B axis) the volume that processes gear with X axis basis, modulus and tine number use 3 class to hang round of implementation to exhibit grinding movement. The X after transforming and crankshaft of report of B axis servo are passed respectively even the axis implement join with respective guide screw directly, cancel to hang annulus reduce transmission error. Transform cost to reduce, shorten transform cycle, the course considers to prove, affirmatory numerical control changes transform plan to be as follows: (1) exhibit motion to undertake controlling with what system of NUM1040 numerical control machines to grinding, use module MDLA and X of drive of BPH servo electric machinery and B rod with communication number drive, use the buy inside electric machinery 3072 lines coder constitutes half closed-loop control. Apply numerical control system to complete the treatment of all sorts of gear face to X and B2 axis linkage and interpolation operation. (2) operation, hydraulic pressure, cooling to the machine tool, lubricant, emery wheel removes the PLC function module that uses the buy inside NUM1040 system / stop to wait for implementation control with slip stroke, the relay that replaced primary machine tool is logistic circuit, raised machine tool stability and dependability. (3) nap of emery wheel of reservation primary machine tool implement mechanical part, the 3 X 380V of dc machine instead that uses nap of original emery wheel, 1200R/Min, the communication miniature electric machinery of 30W, increase contactor of a small-sized commutation to be able to realize nap 1 with nap the function of 2. (4) electric machinery of drive of reservation emery wheel and slip stroke electric machinery, hydraulic pressure, lubricate and cooling part is changeless. 3.

The configuration of numerical control system (1) the compositive NUM1040 of CNC hardware module is collect CNC, PLC the system of complete function numerical control at an organic whole, can control 1-6 axis (4 axes interpolation) , the input of basic configuration / output check the number is 64I/48O (can expand for 256I/O) , 1-3 handwheel, 8.

Colour of 4 inches of liquid crystal is shown. Can come true to control the monitoring of peripheral equipment from cutting tool contrail. CNC system hardware used CMOS circuit, fiber-optic communication technology and modular devise an idea, reduced system and outside connect a line, raised the dependability of electrical system of whole machine tool. The system basically is comprised by module of power source, CNC, drive. Systematic software has open sex and friendly interface, can provide means of help sex process designing and powerful communication function, perfect guide screw pitch error is compensated and a variety of interpolation means, the user can need to write his fixed loop according to fabricating characteristics conveniently. Systematic hardware configures as follows: (2) of PLC program modular system of design NUM numerical control is inside structure of buy type PLC, this machine tool is adscititious 2 32 inputs / 24 output (output takes relay, every relay has move close / use contact each 2 pairs) I/O is patulous board. Use echelon to pursue programming language, modular programming, write many module according to controlling functional PLC process, each module is finished assign a function, each function module is unified call circularly by director Wu module. The program readability of such designs is strong, logistic control reliability is high. Main module has: %INI, systematic initialization module: The setting of parameter of system of the control that finish and optimize an examination. I/O port, timer, tally beforehand buy. Of the initiative address of exchange area of groove guard of stack, data, data and capacity wait certainly. %TS, director Wu module: Finish the loop of % FP of pair of each function module to call. %TP1~n, functional module: The data of processing and CNC is exchanged; Servo axis feed is controlled; Functional code is handled, emery wheel nap is controlled; Slip motion is controlled; Operate face plate processing, call the police text processing. %TH, interrupt processing module: Real time handles random incident. PLC controls program flow chart to be as follows: 4.

Machine tool of this roll flute basically uses the last word at grinding involute cylinder gear. Use exhibit, tooth form of involute of graduation principle grinding, press rack and principle of gear clench the teeth to generate involute tooth profile with cone-shaped emery wheel. Implementation of synthesis of axis of two numerical control exhibits X and B to move, in exhibit movement while, slip of gyral emery wheel along with reciprocate of an edge teeth directional, postpone circular process, generate an involute tooth flank. Workbench is motion of numerical control circumgyrate, when exhibiting graduation position, voluntary withdrawal breaks away from emery wheel the contact with workpiece, workpiece graduation arrives the next is alveolar, graduated size and precision are decided by control system. To the gear of different measurement, modulus and tine number, numerical control system is calculated automatically, control is exhibited with dividing movement. Since this machine tool is transformed, because raised mechanical drive precision, reasonable use clearance and pitch error compensate together with ability, workpiece machines precision and work efficiency to rise somewhat. Machine tool function is stable and reliable, major hitch did not happen since moving, according to preliminary count, fault rate relatively 80% above are reduced before transforming. CNC Milling